Xwaiid



April 2z 1924.

1,490,919 E. R. GODWARD l vAPoIZING ATTACHMENT FOR CARBURETOR .Filed Augze. 1921' s sheetsfsneet 1 IIJI April 22 1924.

E. R. GODWARD vAPoRIzING ATTACHMENT Fon cARUnTQRs Filed Aug. 2s. 1'921 ssheetsf-sheet 2 willi/'1115i [tra r n rvs April 22 l1,924.

E. R` GODWARD VAfOBIZING ATTACHMENT FOR CARBURETORS i Filed Ais- 26.1921` s sheets-sheet FIG. 7

I imno, n sulijexrt of King George V of Great `intmthe engine at a highveloeitgr, b; 1y

Patented Apr. V22, 1924.

rATENTpor-Flcn lBliiElS'JJl ROBERT GOIilWABD, QF CHRISTCHURH, NEWZEALAND.

vromzmo n'rmlcnmnn'r non eennunnrens.

Appicatlon led anni 26, 1.921. Beria In. 495,751.

Tool! whom/t may comrern.'

lie it known that I, ERNEST Bonnin' Gol Britain, residing at 140Hereford Street, Clxretchuroh, in the Dominion of New Zeuinurl, haveinvented certain new und useful lml'n'ovemonte in V1 norizingAAtten-liniente iiioh the following is a pcei lisation.

.lhis invention relates to veporizers for, internal combuntion engines.vo

`The ob"e`et of the invention is to produce a vuporzer whereby theengine ie'supplied. with a uniform dryI gaseous mixture.

With thieobjectin View I produce :1. vuporizer having; spiral passa withone or more eonvolutions, thesoif paesage being designed in a mannerwhereby the large sur faces of the partitions between the pessugee areavailable for the surface eve ration and time element process. The timeelement (provided'by making an element wliereb the charge is compelledto travel a'eullicxently long route to completely ab Sorb the 4wetparticles) is very important. It is well known that any volatile liquidrequires a given time to become a, vapour or gas (the time being dese.with@ greater amount of heat and as the charge is drauligi ma ing ittravel a long router-suite cated, and with great surface aree for the)vet particles to be s rendl upon, a decided time element is supp ieriwhich deals eliiciently with the lowy ade fuel.

I provide a so a heat element in addition to the e irully shapedpessanee which eonstitute t e surface und time element.

Theheat element is so desimed that the' various fragt-ione of wet fueabsorb heet from it according to the requirements for V evaporation ofeach fraction, the heavier part of the fuel being; treated with thehighm er temperature, and the lighter parte with a lower temperature. ni

In the drawings eeconipmiying this speoifiliation, I have ilesoriii'eflthe apparatus more purtioulurly in conriiection with vertically arrangedspiral passages, but so lthat the invention muy be n'iore r'louriyunderstood in its izroac Sense, views illustrating horizontal epuellyinstructed an# flugeeof' different (lesione are uielufied. hey

are ull related, or olizu'uolzerized hy, havin'gworea of 'the entreneeeor inlets `the essence of `'the invention embodied, name f ly, `thetime, surface and heat elements.

In the drewingu accompanying this apeci fic-ation,

Figure 1 .ie un end elevation of the vaporizer and connectione lookingrearward from radiutor end. y

F i nire E in n )ersmetive View showin veimriuer, exhnuet end part ofthe inlet und return pipe, with the cover yof the return pipe removed. i

Figure li is a perspeotive view showing manifold, inlet and return pipe,carburetor eide, portion of return pipe being broken away to showdistance piec `und method of its communication to the manifold.

`Figiue 4- is a sectional view of the va orimer,` the sci-oiled sectiontaken on line AWA Figure 6.

Figure 5 'is a perspective View of the scri'ill.

Figure 6 is e plan of the scroll, showing` the corrugated metal ribbonwhich acts as a s aeerbetweejn the platee top and bottom. bo igure 7 ise perspective View of the hot Figure 8 is a. persptive view of the hotplate.

designs which embody similar features to those contained in the designillustrated in Figure 4. i f

`Figure 1() is a view rshowing one of the partitions around the inletpipe as used in the design illustrated in Figure 9.

Figure 12 is ay View .of oneof the arti! tions around the inlet pipe asused in t e design 'illustrated in Figure `11.

My apparatus consists of. a. vessel or rhainher comprising an outercover 1, and une or a series of spiral partitions 2 having one or moreconvolutions or partial convo` lotions before reaching its maximluudilincter 4, providing a spiral or curved pas sugo or passages 3, spacedapart by separator menne such as a narrow mrrugabed metal ril-hon 3" orother suitable formation (opV und bottom, seid` corrugated metal r1 3Bor other suitable formation, Where` loonteri et the bottom of thepassages 3, is in enmay Figures 9 andll` are viewa of alternativer ofthe apparatus, although I prefer that it be in excess of the latterareas. The

l sum of the area lof the outlet 9 of the spiral passage or correspond1nr area to 'the area of the return 7 which communicates with the 1ntakemanifold 8, or in another form the sp1- ral partitions 2 in the vesselor chamber are so arranged that the area in the passage 3 may increasefrom the inlet 5 to the outlet f 9, and reduce the speed of the mixturedurtion stroke of t ing its progress-through the spiral passages 3.These passage outlets 9 discharge the charge into an annular space 10surrounded titions 2, and being too heavy to remain suspended (or becarried bv the 'air passing through vthe spiral passages 3) descend'thesui-face of the partitions 2, meeting invcreased temperature (due toconduction up the partitions from the hot plate and to radiation from-hot plate) until gas is formed, in the event of the liquid fuelreaching the extreme lower edge 3A of the spiral partitions-2, where..itcomes in contact with-:a hot plate 12 (which may. be

dishedwith the object of causing a further -retardation of the heavyparticles by the effect of gravit .further vaporization takes place andfina ly elongated receptacles 12A projecting from the sald hot plate 12downwardly into a hot box 13 dissipate any of the wethydro-carbonswhich4 may reach this point.

The air which carries or conveys the wet particles of the fuelslows'up-A to a degree lthat the said wet particles which have becomedeposited upon the partitioned surf aces descend the partitions 2 bygravitation until the said wet particles, meeting with a graduallyincreasing temperature, are treated in the manner described.

- These spiral ypassages 3 are covered by a to\p plate 14, which forms ajoint lfl^ with the top edges 2A ofthe said partitions'-2,y so that thecharge cannot escape from the top of the spiral passages 3. The -hotplate 12 forms a joint with the bottom edges 3Aof the partitions 2.compelling the charge to traveigthe spiral or curved routeas formed byth'e'spiral or curved partitions. The hot plate 12 or base with the conemember 12B forms the top member of the heating element which compriseswhat may be termed a hot box 13, into which the hot exhaust gas ges 3may approximately.

,conducting it to the plate 12 an is permitted to enter and heat theplate 142,

thus in addition to the `function ascribedY heat and to them above,thatof collecting h t ence to' partitions 2.v Insteadof exhaust gasesother.

suitable heating means may be lntroduced and disposed within the saidhot box to supply the heat element for the method herein described.

In fitting the vaporizer to a power unit, it is preferably fitted into.and v'made part of. or placed in close `proximity to the eX- haust ipe15. When in proximity as indicate in Figure 4, there is a branch 15Aattached and led to the bottom of the hot box 13, forming communicationbetween the exhaust and the interiorof the hot boi:r

at 15B, Where the exhaust gases enter. and heat the under surface of thehot plate 12, and surfaces 120, of the downwardly proj ecting elongatedreceptacles 12^. Of course, this manner 'of connecting with the exhaustof a powerrunit is' merely illustrative, and it will be understood thatif desired all the hot `exhaust gas may be caused to pass through thehotbox 13.

The upper end of the vaporizer is covered by a cap member 16` in thecentre of which a joint is made with the return pipe 7, as at 16A. Thereare set screws 17 having their heads outsidethe cap member 16, and

their points yinside which are brought to bear against the top plate 14,by means of which a joint is formed between the top and bottom edges ofthe partitions 2, the plate 14, and the hot plate 12 respectively. Thereare'suitablel bolt mem-bers 18 to retain the. vaporizer as` a completeunit.

`The heating element thus supports the vaporizer and transmits heat tothe vaporizing unit. lt is obvious that the temperature is higher at.thcbase of thc unit where it is in direct contact with the hot plate12, thus the spiral partitions2 have a ma innun temperature at the baseof the vapo# 'rizcr, and a minimum at the top; then as `it is well knownthat the' fractions of the hydro-carbon oil or petrol as used forinternal combustion engine fuel have different degrees of volatility,and as the wet particles or heavy wet fuel descends the partitionsurfaces, they become further broken up by heat' transmitted from Vtheheat element, and form a gas which combines with the air current.

The heavier particles which reach the hotv plate 12 `are carried alongthe spiral orv curved passage in direct Contact with the vui . alongthev opi hout l'roni tho exhaust iH nood to the host aulvuntngo bygcoppi ing tho nocossary hout to thriuo port ,s t uit require it. Thvary largo plate surfimo oltaiuod hy this@` iliooiiro und upon which thomixture spreads ita, f, Moin-te Wwm'ization, Iaiiuoo rentrifurul :Lotionoxorfmi upon *the tuoi mixture` tunilu to 'lopofiit` the wetpoirtioloiiy upon suoli lar-1e pluto surface, thun expos ing thol Huidwrit iiiartichiu to a moving.;r ouh ront of :Lim wl'iioh tondo tomsooloruto v' Doril zatiori by opwinding such wet partio to in a. thin.film over largesurfitoo wliorohy the fuoiirtion of the air current inoomhintion with thu vuryiripf hout ohliuinoil, hy conrluoiivitythrouigli tho l'iaitit,iriiisii" prof mploto vaporizatiori.

i another form of tho invention (i'ihuo vtuto-fl in liiguiroo 9 and i0)where tho fipirul partition 2 may ho formed as in tho manner of nvortioal ooi-ew thread having; two or moro turrm,thoro may he ono, noshown in Figure 10, or a, multiple of thm thro und thoy muy hirvo uninoreuuingr `pitch so that they provide o gradually incroiusing area inthe ,pamgm t In thisform the cover lio a. `cup ohuiiiod member, thesurfacel" thereof ttin` snugly over the peripheryof the threads firming.

the partitions 2.

The hot box 13 is o cup ohapd mernliior,

of greater diameter than the cover 1.J pro viding an annular space i3^for the exhaust gasoil. f'

lt 'will ho ur'uierstomi that io thi@ forin of thol invention the:`nzlzutrpo of :forli :io drown through t u ii t pitio to thu lower odge,3^ ofV opn l i `roo Zi, und .from tho *o [miiempgoo 3 to tho top th of.und into tho roturu pip .it thuo n|i|mront thu u 1m iiruurou'ymto i rotimos hotw, l.

lpipgu, o hut .io drown flown direct ele-w spirol pogingen and theoutlet9 of uuid pasyIori :it tho periphery of tho disco 2. In

igooigu the chui-gro outoro the to2), as `in l y on to tho hot pluto i2usr shown in Figzuro 1,1,

when: it follows u oorollod pasiouge .lilr

formed in the hot pluto 12, an otpzivalont to` tho riuiroptuolo inruoiul'ior 12, l `i,j nire l4. i

This sorollwl whirh tho the inf-lido t' passage lil is o .:hannol into tpartidos of fuol flow `from the outor oligo in diroot con- `tfiotwiththohot plutou A rouiul iiuilloplaw 22? uhovo this hot plato riuniti-uthe ohungo triwol out over the poriphory` of unifi round hulio, uml thisbulli@ .20 iu hohl io a pouition in proximity to the Scrollrad pasion voiu the hot piutohut o. ouiioient distance t orofromA to' allow' a freeptlosngewoy for tho evapo'rztt' 'l mit Tho pintor or dirson are oovered,h v p pluto il, efpzivahaint to the plate 14 ilii.if-,r-otoci in Figurr4, which forms a joint with u top (liso of tho rstaoic, tlm` diameter of`tho unifi pluto boing not greater than the iinu'iotor of the (lisos oothat tho passagewuyol.' tho charge drown from the annuiar,

spi ,o l() mirroufniliogr the diso is not con otriottul, 'Thora` `uroHet screws 17 provided. mloptod to register `with tl'ireiulod holes intho rap mumhor lil, and screw therein so thot tho pointof tho sot Sori-Wwill engage ti-ug pluto 14 to impart pressure thereon,

unil reliu'np the stool: of lis-iosa in position betwoon tho top plutoifi und thoflat projection i. of uovor l. "lho ohurgo io thon drawn intothe stool( or column of the platos or lisos 2, whioh provides thesurface nesoarv for n, ooiul'iloto evaporation of, the fuel, unf.` alsogreatly reduces the, temperature of the oho'rpgo, w'l'iioh iu then ledto the outlet as ihown. y

ny nymruti'off/W'Ihe petrol is drawn tllrougrh froni the moin supplytank in any ui'iprovod way, and after passing through tho ':mhurotor 11led through the inlet pupo 6 to tho top of tho vaporizer through u hololil in tho cap 16 thereof, `and jointed up with u pluto 14 adopted tocover. and horrn of joint MA, with the top edgrii 2^of thu spiralpartitions 2. The loto 14 is nmintainori oor ontrio with t o sorollediurruhor, mui i ,h tho outer cover 1, by in of tot uumwu 1% which servethe .i purposo of keeping the mrolled momher rigid in. itu pluto omiforming thr. joint 711i." het 'o reforred tru with tho wrrollodrooruhriu 'pluto 14, jiuiut mijl inlut pipo littedo'prul partit mm ifllt" wut purtioloo motori upon by gravity de-` scendi the heatedpartitions, and in dewhereby the scending meetlwith'an increasingtemperature due to conductivity of heat upward from ythe bottom ends ofthe partitions until they reach the maximum temperature at the hot plate12;*thusuthe downward travel of the wet particles carries the same underthe influence of constantly increasing heat are vaporized as they meet adegree of eatadequate to produce such eiect; if anyy of said lwetparticles actually reach said hot-.plate 12' they are further retardedin their passage by the corrugated I metal ribbon?,B which separates theparti'- 15 tions, thusforming vcellsrwhich retard any liquid. Anyremaining wet particles fall by gravity into the elongated receptacles12A .provided in the hot plate 12. where they7 are subjected totheiaximnm heat andvaporized. The vgas t us formed is drawninto/theannular space 10 surrounding the maximum ,diameter 4 o`f the scrolledmember, to the top thereof, and across the space 10^. into thereturnpipe 7 surrounding the'inlet pipe 6,. then is drawn through the saidreturn pipe 7' to the engine. The advantage of placing the inlet pipe 6to the vaporizer, inside the outlet pipe 7 from the vaporizer. is thatthe incoming charge contained in the pipe 6 being cold,'absorbs' avvcertain amount of heat from the gas in the outlet pipe 7 which isthereby robbed Vof its heat, thus supplying a cool charge to the engine.The corrugated metal ribbon 6^ in the pipe 7 is supplied for thepurpose' of forming a distance piece to maintain l the pipe 6 centrallydisposed within the pipe 7; it also acts as heat radiators to facilitateinterchange of heat between the `incoming and outgoing gas fuel.

4tures-pr the like comprising means forreceiving thefuel mixture-saidreceiving means having a curvilinear partitioned passage for prolongingthe progress of the fuel mixture therethrough while at the same timegyraJing laterally the latter.to deposit by centrifugal action theheavier particles of unvaporined fuel on the walls of said passage. anda heat transfer means engaging the walls of said passage whereby'heat isassisted by conductivity to extend through said walls in a directionopposite to the gravitation of unvaporized fuel both on said walls and,in the'passage, the temperature varying in degrees from a maximum heatvat the bottom of said walls and pasto a minimum heat atthe top of saidsagle wa ls and passage.

3. A vaporlzer as characterized in claim 2 having means for deliveringt-he fuel mixture to said receiving means and means for discharging thevaporized fuel mixture from said receivin means, said delivering meansand said dischargin means being disposed in intimate paral el relationso that heat f the discharged vaporized fuel mixture is exchanged to the.incoming fuel mixture iowing to said recelvlng means.

4. A vaporizer for hydrocarbon fuel mixtures or the like -comprising acasing, a

transverse partition providing a hot-plate sages leadmg outwardly fromsaid central receiving passage with their outer ends spaced from thewall of said casing, means to form a plurality of radiating curvedpasclosing 'the top sides of said curved passages, A

said hot-plate by engagement with the lower ends of said partitionsserving to close the i lower sides of said curved passages and said"ntral receiving passage, said hotplate being adapted to transfer heatby conduction upwardly through said partitions, the temperature varyingin degrees from a maximum heatat the bottom of said partitions andpassages to a minimum heat at the top of the same, means for deliverin afuel mixture into the upper end of said central receiving assage, andmeans communicating with t e upper end of said casing for dischargingvaporized fuel therefrom. y

5. A vaporizer as characterized in claim 4 in which'said fuel mixturedelivery means and said vaporized fuel discharge means ar disposed inintimate parallel relation so th t heat of the discharged vaporized fuelis `exchangedv to the incoming fuel mixture flowing to said receivingmeans.

6. A vaporizer as characterized in claim 4 in which the bottoms of saidcurved passages of said receiving means are provided with means inmutual engagement with said hot-plate and the bottom portions of saidvertical partitions to both aid in conductingheat from the former to thelatter and also for retarding the outward flow of any unvaporized .fuelwhich gravitates into direct contact with said hot-plate whereby itsdischarge from 1said passages is delayed until it is finally vaporized.'

1,490,919 l i l u 7. A vapcrizer as characterized in claim -L yand saidvaporized fuel dischar means bef in which said hot-plate is providedwith a ing disposed in intimate para lel relation, conicalnielubcrdisposcd to project upwardso that heat of the dischargedvaporized ly into said central receiving passage of fuel mixture isexchanged to the primary I said receiving means. fuel'mixture enteringthvnporizcr. 15

8. In a vaporizer for hydrocarbon fuel In witness whereof I ulix nlsignature. mixtures or Atlie'lilre, means for delivering 'a ERNESTROBERT GO WARD. `fuel mixture into said vaporizer, means or Witnesses:

discharging vaporized fuel from said vepo- MABEL MCKEEHAH,

l0 rizer, and said fuel mixture delivery means Rom'r Pm, Jr.

